Differential mechanism.



A. D. GILPIN. DIFFERENTIAL MECHANISM; AIPLIOATION TILED SEPT. 30, 1910.

Patented July 11, 1911;

wi thuo'eo A D GILPIN DIFFERENTIAL MECHANISM. APPLICATION TILED SEPT.30, 1910.

PatentedJuly 11,1911.

2 SHEETSSHEET 2.

m m a which at the same citizen of the United States, residing atLincoin, in the county ALBERT D. GILPIN, OF LINCOLN, KANSAS.

DIFFERENTIAL MECHANISM.

meiiibn of Letters Patent.

Application filed September 30, 1910. Serial No. 584,769.

To all whom it mayconcern:

' and l2 extend o Be it known that I, ALBERT D. GILPIN, pp

sltely from the housing and support Eachof I an.sas,have inventedcertain new and usear in cross-section at its inner end and fulImprovements in Differential Mechavided with a pan of ratchet Wheels 10and 111:1}1, of which the following 1s a specifi- 16 which arecorrespondingly apeitured to ca ion.

c irections.

A drive or main gear-wheel 17 is disposed between the inner adjacentends of the axlesections 13 and 14:, the gear 17 being trally a'perturedfor the reception of the inner extremities of the axle-sections.axle-sections l3 and 14 with gear-wheels 18 upon their inner endsdisposed against the ratchets l6.

The gear-Wheel transmitting the power to the'axle sections so astopositively actuate the same either in a forward or a backward direction,and

time will admitof the racmg of the outer axle-section when the motorvehicle is on curves.

The invention has for another object to pe l'ovide an improved pawlmechanism adapte to ratchets carried upon the axle-sections to admit ofthe required movements of the v The invention further contemplates asubtie opposite sides of the gear 17 and have their inner meeting endsreduced as at 22 to receive a split circular spring 23. The pins 20carry stops 2% at their inner ends extend. ing outwardly from one sideof each of the reduced portions 22 to receive the opposite ends of thecircular springs 23. One of the is preferably provided with a pro ect1on25 engaging into a correspondingly formed recess 26. in the inner end ofthe opposite rocking-pin 20. Each of the rocking-pins is provided with apair of orm so as to occupy but a small space to accommodate the deviceto machines now manufactured.

For a full understanding of the invention reference is to be had to thefollowing description and accompanying drawings, in which z Figure 1 isa transverse section through he improved differential mechanism. Fig. 5is aside elevation of the improved mechanism having one of the disksremoved therefrom. Fig. 3 1s a section-on the line 33 radially extendingpawls 27 and 28, the of Fig. 1. Fig. 4 is a section on the line samebeing disposed in offset relation rela- 4 et of Fig.1. ig. 5 is aperspective View tive to one another for alternate engagedisclosing theimproved mechanism having the parts detached one from the other. Fig. 6is a transverse section through one 'of the locking pins disclosing thetooth and the mounting therefor. Y

Corresponding and like parts are referred ment with the teeth of theratchets 15 and 16. The outer ends of the rocking-pins 20 arediametrically recessed as at 29 to receive a conical tooth'30 seating inthe lower side of the rocking pin 20 and projecting from the same. Theinner end of the tooth is reduced to provide a shank 31 for thereception of the lower end of an expansion spring 32. The upper end ofthe spring 32 seats against a screw-plug 33, engaging detachably in theopposite side of the rockingoin, and being provided with a depending toin the following description and indicated in all the views of theaccompanying drawings by the same reference characters.

'rReferrin'g to the drawings the numeral 0- designates a suitablehousing for the reception of the improved differential mecha- PatentedJuly 11.1911:

cen- 2 h hereafter set forth.

-. against the gear-wheels'18, thearins 37 exstuds orwrist-pins 30. -T

' 18 to imp vided with collars 4O engaging I with carried therewithand.the 'stu center the same. ach of the rocking-pins 20' is provided withan eccentric stud 35 projecting/ from its outer end for a purpose 1'Each of the axle-sections 13 1 1 is pro:

videdwith a web 36 having rovided w-ith'longitudinal recesses 38 terminating in their outer ends. The web 36 en- .gagesabout'the sections 13-and 14 and about the tending outwardly and engaging 36 is emhe web'ployed for the purpose of insuring form rocking movement of the pins 20during the operation of the device. The tooth 30 engages wit g artrotation to when the axle-section 13 moves. mission nechanism, it isfound preferable to rivet or otherwise secure theratchets 16 and 17 andthe gears 18 to one another so as to )roduce a uniform device.

Disks I edges of the drums .19 to close the same so as preven the accessof dust and-the like and gears and to prevent. the.

flowing o nisin. The axle-sections 13 and '14; are proagainst the outerfaces of the disks 39 to further preof dust tothe mechanism.

vent the access In the operation of the improved diflerential mechanism,rotated in a forward direction it carries therewith the rocking pins 20.The studs 35 eccentrically carried upon the ends of the rocking'pinsengage againstthe inner walls of the slots 38 in the radial arms37. Asthe arms 37 are carried upon the we 5 since the webs are rigid upon theshaft sec.- tions 13 and, 1 1 the pins 26 are cause to revolve, and todeflect the forward'pawls 27 into engagement with the rate radial arms37 are. so spaced apart as to register with the studs of each ins 20 soas to move the same the three-pawls .27 to intermesh the ratchets 15 atthe same time. This movement therefore locks the axle-sections 13 and14- to' the gear whee of the axle-sections 13 and 14 moves faster thanthe other, asin roundi'ngia curve or the like, the ratchet-wheellfirides loosely .be-v' neath the pawls 27, the rocking 'pin the'tensionof" the springs to turn backwardly, 4

I p "35'- engage against the opposite walls of the slots 38v and arecaused'to-revolve the pins- 20- in an op I oisit i Th .0PP0 1te1 m0V6mBn.0 vrmgs maining rocking-pins,

same time as the uni In the manufacture of the improved trans- 39 areengaged against the outer f oil'from the differential -mecha-' when thegear wheel 17 is' the ratchets,

b 36, and

in unisonv pins.

'enyone;

' ing-w-ith the ro 4 pt porting the 'pawls, rotating slightl againstenthegear-wheel 17isreversedin'movementso as the rocking pins 20 arethe; pawls '28: into engagement with the teeth of the ratchets 16. Theaxle-sections 13v and 14 are thereby looked upon the gear wheel 17.

The drawings disclose the-gear 17 as being of the well-known type,namely, gearing meshing with 41 c'arried'upon the drive-shaft 42. \Vhenone of the rocking-pins revolves, the redisclosed in. the presthree innumber,- rethe samedistance and at the h the the studs. 35 engage witent instance as being volve through arms 37 and dependently of oneanother.

Having thus described the invention what is claimed as new is r- I i 1.A differential-mechanism including a main gear wheel having drums uponits oppo'site sides, axle-sections extending into the drums,'pairs ofoppositely formed ratchets carried rigidly upon the inner ends 0axle-sections within the drums, disposed within the drums and h setpawls for alternate engagement with the ratchets, gears carried of theaxle-sections, and yielding teeth carried in the outerends of saidrocking pins for enga ement with said gears. 1 x

2 A 'fierentialjmechanism including a main gear having oppositelyextending drums, axle-sections e tending into the oposite ends of thedrums, ratchet wheels carried rigidly carried in the drums and havingoffset pawls for alternate engagement with the teeth of and springsconnecting each air of said rocking pins 3 Adifiereritial mechanismincluding a main gear, tions terminating agains the opposite sides offormed ratchet's disposed ends of the axle-sections,

upon the rocking pins carried in registration in the drums," an springsconnecting the registering rocking 4'. A, diiferential mechanismincluding a main gear, drums carried against the oppo site sides of, themaingear, rocking pins 'ournaled' in the drums, axle-sections proecting.into the 'drums, ears carried upon the inner ends of the ax e sectionsregisterking pins, oppositely form'e ratchets carried. upon theaxle-sections drums," teeth'carried by pins for yieldable engagementwith the teeth e; A d etitian mechanism including i main gear havingoppositely extending f the rocking pins aving off-- upon the inner endsoppositely formed upon the 'in-- a beveled a, corresponding gear are notpermitted to move in-- to yieldingly coni the gear, oppositely innerdrums carried by j npon the: inner ends, -oifthe axle-sections, I

BQrQcking-Pin's' journaled in" the drums registering with .the' gearwheels'i-and a yielding connectionfdisposed between the registeringrocking in's' in; the opposedzclrums. 6; A= ifiei'ential'mechanisinincluding a 10 main gear,-{ dr1iins fornieinfion the sides-of the. maingear! and -haiiing reeesses tforrned in their inner wails, rockinpinsf'sating in the-recessesjiind having ofset pawls, axle sections'p'rojeeting .i 'tjhe drums; opp 'sitely 'fo'rmedratchets;earried upon-,the'- a;;1e.-

sections for engagement withthe 'pawlsjg "and roking pins supporting thepawls is: aiter nately bringing-the same into engagement I withtheratchets. v 2 A; c liflerential mechanism including amaimgea'r havingdrums againstits opposite sides"; axle-sections prmecting into the drumsoppositely formed ratchet wheels carried i jponfl'jthe inner endsof theaxle-sections, roekin jpins rotatably carried inthe drum registrationwith the ratchet-wheels, oppositely extending paw'ls carried upon the-th e-fopposite1y formed ratchet wheels, Webs keyed to the axle-sectionsand h'avin radial '30 arms, eccentric studs carried upon t e rockintpins and engaging with the'arm's of tin} 'We s, and sprinis connectingthe inner-registering ends 'o'ft e rooking-p'ins I I 8-. A1ififerentiai'meehan'ismy inolnding s 35 'gearhaving drumsforn edi'against its 0pposit e sides, axle sections projecting into the 'druins,ratchet wheels carried upon the-axle-- section's, rockingpins journaledin the drums .land having inwardly extending pawlsl en gaging with theratohet wheelsfwebs can. .riedby: the axle-sectionsuand having radialarms registering with the rockingpins pro.-

Vided with radial slots, eccentric pins dis.

posed, upon the outer ends of the roking pins andengaging in the slots,and conneting means arranged between the registering rocking pins toyielding-1y bolt the rocking pinsin the same position.

in presence of two witnesses. I ALBERT D. GIL PIN. [L.' s]

\Vitnesses B. F. SPENCER In testimony whereof, I aiiix my signatiirerocking pins for alternate engagement with JAMES C. COOPER.

